c - GCC exiting with an error 1 even with -Wall. No explanation why? -

so tried recompile 1 of projects few weeks ago , surprise keep receiving error 1 on it. used mingw compile , eclipse cdt. have -wall flag enabled on gcc assumed if problem code have more useful information make error 1 being thrown. such, suspect issue lie in how formatted make file. luckily, did compile project when push commits last time , binaries still in repo. nevertheless, appreciate can continue improve project.

edit: when -all, refuses compile.

here makefile. hope simple me following incorrect syntax:

cc=gcc -i../include -l..\lib  override cflags+=-wall -o3 #$(shell pkg-config --cflags fftw3) #override ldflags+=#$(shell pkg-config --libs fftw3 glib-2.0) -lm    .phony: clean  all: lvdoenc lvdodec  lvdoenc: lvdoenc.o lvdomain.o    $(cc) $(cflags) -o $@ $^ $(ldflags) -i../include -l../lib -lfftw3 lvdodec: lvdodec.o lvdomain.o    $(cc) $(cflags) -o $@ $^ $(ldflags) -i../include -l../lib -lfftw3 %.o: %.c    $(cc) -c $(cflags) -o $@ $^   lvdoenc.c: lvdocommon.h lvdodec.c: lvdocommon.h   clean:    rm -f lvdoenc lvdodec lvdomain.o lvdoenc.o lvdodec.o 

here link repo: https://github.com/skylion007/lvdowin

update: using of answers have confirmed gcc exiting error 1 , cannot figure out why.

update2: it's not printing syserr.

without transcript of make's output, when run it, can't see why gcc should fail silently, can see @ least 2 problems makefile:

• since state using mingw, target platform must ms-windows, on executable files should qualified .exe extension; thus, all: lvdoenc lvdodec rule malformed; should, @ least all: lvdoenc.exe lvdodec.exe[1], (or better, portability all: lvdoenc$(exeext) lvdodec$(exeext), define exeext = .exe windows, , leave exeext undefined, or defined nothing, platforms don't require extension).

• your 2 rules lvdoenc.c: lvdocommon.h , lvdodec.c: lvdocommon.h incorrect; .c files don't depend on .h, respective .o files do. thus, these 2 rules should lvdoenc.o: lvdocommon.h , lvdodec.o: lvdocommon.h respectively.

[1] of course, need correctly refer these 2 "goals" respectively, lvdoenc.exe , lvdodec.exe, (or lvdoenc$(exeext) , lvdodec$(exeext)), consistently, throughout makefile.

there few other constructs, within makefile, consider questionable: cc shouldn't defined, -i../include or -l..\lib, (and why inconsistently / in former, \ in latter? both should /). conventionally, -i ... belongs in cppflags, , -l ... in ldflags, both cflags , cppflags passed compiler, , all of cflags, cppflags, , ldflags passed compiler driver, when invoking linker, (although, others have noted in comments, -i ... settings strictly necessary when compiling .c .o, while -l ... settings required in linking phase).